Distracting device for orthodontic/orosurgical purposes on the lower jaw

The invention concerns a distraction appliance for orthodontic, orthognathic and maxillofacial surgery purposes on the mandible for the distraction of a frontal bone segment, wherein the appliance is formed by a first distractor module and a second distractor module, wherein the first distractor module is essentially u-shaped, approximated to a dental arch, and has a mid-segment and on both sides of it an end-segment, wherein the corresponding end-segment is connected to the mid-segment by means of a linear distraction element and wherein each end-segment provides fixation parts, and wherein the second distractor module is related to a frontal bone segment to be moved, guiding the same and having fixation parts.